How can cosmetics be most sustainable?

We use cosmetics and hygiene products each day; when brushing our teeth, lotioning ourselves, showering and in many more situations. "Modern" cosmetic products cause lots of environmental damages. Today many cosmetic products claim to be "organic" or "sustainable" in order to profit from the increasing interest of customers in these topics, but this is too often misleading. Luckily, there are some characteristics, labels and standards that help you to identify more sustainable cosmetic products.